The material of our product is high borosilicate glass and the advantage for our glassware is as follows: 1.Non-porous pyrex glass. It won't absorb food odors, flavor or stains2.Higher resistance to mechanical shock, scrach resistant3.Heat resistant, safe for microwave, oven, diahwasher, freezer, refrigeratory, etc.4.Superior quality and competitive priceAbout our prodect Our main product is pyrex glassware, such as: glass bakeware, glass casserole, glasscontainer, storage set, glass ovenware, microwave glassware and other heat resistant glassware If you are interested in our products,don't hesitate to contactus. Waiting for your cooperation.Thanks.